[PATCH] D148465: [Demangle] demangle builtin type transformations

[Congcong Cai via Phabricator via llvm-commits]

HerrCai0907 updated this revision to Diff 514007.
HerrCai0907 added a comment.

update


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D148465/new/

https://reviews.llvm.org/D148465

Files:
  llvm/include/llvm/Demangle/ItaniumDemangle.h
  llvm/include/llvm/Demangle/ItaniumNodes.def


Index: llvm/include/llvm/Demangle/ItaniumNodes.def
===================================================================
--- llvm/include/llvm/Demangle/ItaniumNodes.def
+++ llvm/include/llvm/Demangle/ItaniumNodes.def
@@ -19,6 +19,7 @@
 NODE(ConversionOperatorType)
 NODE(PostfixQualifiedType)
 NODE(ElaboratedTypeSpefType)
+NODE(TransformedType)
 NODE(NameType)
 NODE(AbiTagAttr)
 NODE(EnableIfAttr)
Index: llvm/include/llvm/Demangle/ItaniumDemangle.h
===================================================================
--- llvm/include/llvm/Demangle/ItaniumDemangle.h
+++ llvm/include/llvm/Demangle/ItaniumDemangle.h
@@ -527,6 +527,23 @@
   }
 };
 
+class TransformedType : public Node {
+  StringView Transform;
+  Node *BaseType;
+public:
+  TransformedType(StringView Transform_, Node *BaseType_)
+      : Node(KTransformedType), Transform(Transform_), BaseType(BaseType_) {}
+
+  template<typename Fn> void match(Fn F) const { F(Transform, BaseType); }
+
+  void printLeft(OutputBuffer &OB) const override {
+    OB += Transform;
+    OB += '(';
+    BaseType->print(OB);
+    OB += ')';
+  }
+};
+
 struct AbiTagAttr : Node {
   Node *Base;
   StringView Tag;
@@ -3884,7 +3901,15 @@
     // Typically, <builtin-type>s are not considered substitution candidates,
     // but the exception to that exception is vendor extended types (Itanium C++
     // ABI 5.9.1).
-    Result = make<NameType>(Res);
+    if (consumeIf('I')) {
+      Node *BaseType = parseType();
+      if (BaseType == nullptr)
+        return nullptr;
+      if (!consumeIf('E'))
+        return nullptr;
+      Result = make<TransformedType>(Res, BaseType);
+    } else
+      Result = make<NameType>(Res);
     break;
   }
   case 'D':


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